How long before a waxed jacket needs to be re-waxed?
Barbour recommends that you re-wax your jacket at least once every year to keep it fully waterproof. Depending on the amount of use of the jacket gets, and how it is stored, this may need to be increased. If you notice that there are dry patches appearing then you should treat these areas immediately, once the wax starts to dry out all over the jacket, it should be fully re-waxed.